Pumping plant.



I G. A. UNGAR.

PUMPING PLANT.

APPLICATION FILED JAN. 4, 1912.

Patented Jan. 6, 1914.

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' Patented Jan. 6,1914.

Snow/tor A. UNGAR.

PUMPING PLANT.

APPLICATION FILED JAN.., 1912.

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PATENT OFFICE.

GUSTAV A. UNGAR, or NEW YORK, n. Y.

PUMPING PLANT.

. Specification of Letters Patent.

Patented Jan. 6, 1914.

Application as January 4, 1912. Serial No. 669,488.

To all whom it may concern:

Be it known that I, GUSTAV UNGAR, a subject of the Emperor of Austria-Hungary,

residing at New York city, in the county and State 'of New York, United States of America, have invented certain new and useful Improvements in Pumping Plants; and

i I do hereby declare the following to be a full, clear, and exact description of the invention, such as-will enable others skilled in the art'to which it appertains to make and use the same, reference being had to the are companying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The object of my invention is to utilize internal combustion engines for driving pumps in-a similar manner like steam ennternalcombustion engines may be stopped by shutting off the supply of power but they cannot be started by simply opening the supply of power. Internal combustion engines have therefore been hitherto excluded from being used for driving pumping engines where automatic starting and stopping is required. The present invention therefore ofi'ers material advantages as will be seen hereafter. v

The purpose of the present invention is accomplished by utilizing the pressure in the pumping system to' drive the pump as a motor, which, in its turn drives the internal combustion engine until the latter has picked up 'the'load.

I attain the object of my invention by the mechanism illustrated in the accompanying drawings in which like parts are similarly designated.

v Figure 1 is a View, partly in section of a water pumping plant embodying my invention and having an air pressurestorage tank.

Fig. 2 is a longitudinal section of the starting device in detail. Fig.3 is a longitudinal section of the pressure regulator in detaill Fig. 4 is a cross section of the priming cockjfor the internal combustion engine in detail, and Fig. '5 is a section through a- P p- I The internal combustion engine is represented in Fig. 1 by the gasolene engine 1 the adjoining chambers rises.

which is shown direct connected to the water pump 2. The type of pump represented is a triplex plunger pump. Such a pump must be designed to run as a hydraulic motor, for instance with valves positively operated from the pump shaft, so as to be able to start,0ff from any position as soon as pressure is supplied to the triplex arrangement is chosen for the latter reason. Looking at the engine from the flywheel we assume for example clockwise rotation as thedesired direction of rotation. The gasolene engine being in motion, the pump draws water through the suction pipe 3, check valve 4 and pipe 5 into the suction chamber 6 and discharges it from the discharge chamber 7 into the discharge pipe 8 and from there to the starting device'shown in Fig. 2.

The water enters through channel 9, flows around the differential piston valve-10 into channel -11, thence through check valve 12, the'channels l3 and 14:, pressure regulator 15, pipe 16 into the pressure chamber 17, which contains compressed air at the top. Pipe 19 distributes the water into the service water system. Channel 11 is also connected to the starting pressure chamber 22 by check valve 18','cliannel and pipe 21. It

is obvious that the pressure in both pressure chambers 17- and 22'is equal while the pump is in operation. I

As long as the outlets of the distributing pipe 19 are open, the pump continues'to operate. When the outlets are closed or when the pump delivers more waterthan that taken from the outlets, the pressure in the pressure chambers 17 and 22 as well as The plunger 23 of the pressure regulator in Fig. 3 is lifted. against the pressure of the spring 24, until finally at a certain predetermined pres sure, lever 25 is lifted. In doing this, it separates the contacts 26 and 27 of the ignition circuit 28 for the spark plug 29. At the same time lever 30 is turned to the right thereby closin the cook 31 between the fuel tank 32 and tie feed pipe 52, by means of the rod 33 and lever 34. The cutting off of the ignition and the fuel supply, or either of same, brings the engine to a stop.

The system is now ready for restarting. As soon as water is drawn from the distributing pipe 19,..the pressure in chamber v17, pressure regulator 15 and channels 14 pump. The

turn the engine over and this is done in the following manner.-

The water under pressure in the starting chamber 22, the channels 20 and 35, the channel 136 does not drop, because piston valve 37 and check valve 18 and. valve seat,

40 of piston valve 10 are closed. The pressure of the pressure chamber 17 acts on the total upper area of the differential piston valve 10 and the pressure of chamber 22 acts on the lower ring surface 38. As long as the pressures in both chambers 17 and 22 were equal, the pressure on top of the differential piston valve 10 is more thanthe pressure acting on the ring surface 38. Consequently, the valve 10 with the valve seats 40 and 43 remained closed. The pressure on thempper surface now decreases, until the pressure acting on the lower ring sur face which remains constant becomes equal to the pressure on top plus the pressure of spring 39. With further reduction of the pressure on top of valve 10 this valve now opens a passage through valve seat 40 into channel 41 and thence through pipe 42 into the suction chamber 6 of the pump. The pressure keeps the checkvalve 4 in the suction pipe 3 closed. As soon as the valve 10 is slightly lifted from seat 40 the pres sure acts against the lower full area of the piston valve 10, which consequently is lifted up fully and instantaneously, giving a free passage to the water streaming to the pump.

The water under pressure enters the suction chamber 6 of the pump and drives the pump as a hydraulic motor in clockwise rotation, the same direction it is running when working as a pump. This object is achieved byhaving the water running through the machine in the same direction whether it works as a pump or as a motor, by feeding the, water under pressure into the suction pipe. The water is exhausted through the discharge chamber 7, pipe 8, channel 9, the opened valve seat 43, channel 44. and pipe 45 into suction pipe 3 at a point underneath check valve 4. Pipe 45 could also be ar ranged to exhaust direct into a well, the sewer or into the atmosphere.

The pump now running as hydraulic motor, drives the gasolene engine. 1 In order to facilitate the starting the following device is arranged. Connected to the difi'erential piston valve 10 is a rod 46, which operates a lever, connected by rod 48 and level 49 to the priming cock 50, Fig. 4. This cock is connected to the combustion chamber of the gasolene engine through port 51. The gasolene tank 32 is connected to the cook 50 through pipe 56, checkvalve 55, strainer 54 and port 53. Checkvalve 55 and strainer 54 are used to prevent the explosions in the combustion chamber from reaching the gasolene tank- 32. Port 57 may either lead to the open air (Fig. *1) or may be connected to a chamber 58. In either case the compression in the combustion chamber of the engine will be reduced as soon as cock 50 is opened, and the open cock admitting gasolene direct into the engine cylinder for priming purposes. The releasing of the compression greatly facilitates the starting. The priming cock is closed simultaneously with the piston valve 10, but this valve closes only after the gasolcne engine has attained speed.

The differential piston valve is closed by means of the piston valve 37. The gasolene engine having come up to speed, the centrifugal governor 60 opens the piston valve 87 through lever 61, rod 62, lever 63 and rod 64. The piston valve 37 is moved downward, thereby connecting the passages 65 and 66 and consequently the pressure chambers 22 and 17. With the passages 65 and 66 open, the pressures in chamber- 22 and 17 are equalized and even before this is the case, the differential piston valve 10 closes through the action of spring 89. Valve 10 rests on the valve seats 40 and 43. Tle suction chamber 6 of the pump is therefore disconnected from the starting pressure chamber 22 and the pump acts again as pump, discharging into the pipe system, the bypass through valve seat 43 into the suction pipe being closed. The differential piston valve 10 would also close without the use of piston valve 37. Without the valve 37 the valve 10 would close after the pressure inthe starting chamber by driving the pump, has dropped.

low enough to permit spring 39 to reseat valve 10. in most cases this will be undes1rable, because the pump would not start pumping before the pressure in chamber 22 is low enough and this would mean not only a loss of water and power, requ red for refilling the chamber 22, but the flow of avater through the distributing pipe 19 would be interrupted to a certain extent. In case of emergency, when the governor should be out of order, however, the automatic closing ofvalve 10 after the pressure in chamber 22 is sufficiently reduced adds a desirable feature of safety. As soon as the engine stops, piston valve 37 is closed thereby disconnecting pressure chambers 22 and 17, and this is necessary for starting the pump. In cases where crude oil or similar fuel is used in stead of gasolene, the starting is accomplished in the following manner. The fuel tank 32 is used for crude oil and pipe 56 of the priming cock is connected to a separate 'gasolene tank. As soon as the engine has liquid or gas can be pumped with. such a device and that it is immaterial what system of,

internal combustion engine is used. It will be also noted that any type of pump can be usedprovided only that the pump is capable of running as a motor, when supplied with a fluid medium under pressure. Such a pump may be of the piston, rotary or centrifugal type. It is further immaterial in the case of pumping liquids, whether an air pressure chamber 17 is used, or an elevated tank or an accumulator loaded with weights.

and means to supply I claim. 1. In combination, an internal combustion .engine a pump capable of acting as a motor connected to' said engine, a pressure tank, motive fluid therefrom to the pump so as to drive it as a motor for a period limited only by the supply of motive fluid, Wherebythe engine is driven until it has acquired speed sufiicient to drive the pump.

2. In combination, an internal combustion engine, a pump capable of acting as amotor connected to said engine, a pressure tank,

and means dependent upon a reduction of pressure in said tank to supply motive fluid therefrom to the pump so as to drive it as a motor for a period limited only by the supply of. motive fluid, whereby the engine is driven until it has acquired speed sufficient to drive the pump. e 3. In combination, an internal combustion engine, a pump capable of acting as a motor, connected to saidengine, a a pressure ..tarl

supplied with fluid by the pump when the j latter is driven by said engine, fluid pressure actuated means to automatically stop the engine when a predetermined high pressure is attained in the tank, and means operated upon afallof pressure to a predetermined low pressure, to supply motive fluid to the pump so as to drive it as a motor for a eriod limited only by the supply of motive has acquired speed suificient to drive the P P- 4. In combination an internal combustion engine, a pump'capable of acting as a motor connected to said engine; two pressure tanks supplied with fluid by the pump under substantially equal pressures, one of said tanks being a service supply tank, pressure means to automatically stop the engine when a predetermined high pressure has been reached in the service tank and means actuated by pressure of the fluid in the service tank at a predetermined low pressure to supply fluid being a service supply tank, pressure means to automatically stop the engine when a predetermined high pressure has baanreached in the service tank, means actuated by pres sure of the fluid in-the-service tank at a predetermined low'pressure to supply fluid from the other tank to the ump to drive it as a fluid motor to start t e engine, and means to connect the discharge chamber of the pump to an exhaust with lower pressure than the inlet side of the pump.

6. In combination an internal combustion engine, a pump capable of acting as a motor connected to said engine, two premure tanks supplied with fluid by the pump under substantlally equalpressures, one of said tanks being a service supply tank, pressure means to automatically stop the engine when a predetermined high pressure has been reached-in the service tank. means actuated by pressure of the fluid in the service'tank at a predetermined low pressure to supply fluid from the other tank-to the pump to drive it as a fluid motor to start the engine, and means for resuming the pumping to the pressure tank after the engine has attained operating speed.

7. In combination an internal combustion engine, a pump capable of acting as a motor connected to said engine, two pressure tanks supplied withfluid by the pump under substantially equal pressures, one of said tanks being a service supply tank, pressure means to automatically stop the engine when a predetermined high pressure has been reached in the service tank, means actuated by pressure of the flu-id in the service tank at a predetermined low pressure to supply fluid .from the other tank to the pump to drive it as a fluid motor to start the engine, and

. means for automatically priming the engine and reducing the compression of the engine at starting. iiuid, whereby the engine is driven until it i.

8. In combination, an internal combustion engine, a pump capable of acting as a motor arranged to drive and be driven by the engine, a pressure tank supplied with fluid by-- the pump and means to automatically supply motive fluid from the tank'to the pump so as to driveit as a motor for a period limited only by the supply of motive fluid, whereby the engine is driven until it has acquired speed sufiicient to drive the pump.

9. In combination, an internal combustion engine, a pump capable of being driven as a motor directly connected to the engine, a pressure tank supplied with fluid by the pump When driven by the engine, means to automatically supply motive fluid from the tank to the pump so as to drive it'as a motor for a period limited only by the supply of motive fluid, whereby the engine is driven until it has acquired speed suflicient 10 to drive the pump.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

GUSTAV A. UNGAR.

Witnesses:

LAURA E. SMITH,

HELEN R. on MOYA. 

